District



5 Sheets-Sheet l @trovati LUBRICATOR A. F. G. LUCAS El' AL Filed Feb. 26, 1925 Feb. 19, 1929.

A. F. G. LUAs ET AL LUBRICATOR Filed Feb. 26, 1925 5 Sheets-Sheet 2 Feb. 19, 1929.

A. F. G. LUCAS El' AL LUBRICATOR 5 Smets-She??l Filed Feb. 26, 1925 Feb. 19, 1929. 1,702,477

A. F. G. LUCAS Er AL LUBRICATOR Filed Feb. 26, 1925 5 Sheets-Sheet 4 ro P/Pf Aff/6 7 Feb. 19, 1929.

A. F. G. LUCAS ET AL LUBRICATOR Filed Feb. 26, 1925 5 Sheets-Sheet Patented Feb. 19, 1929.

ANTHONY F. G. LUCAS AND EDWARD CLEMENT, F VJSHNGTON, DISTRICT OF COLUMBIA; SAID CLEMENT ASSIGNOR TO SAID LUCAS.

LUBRICATOR.

Application eil February lily invention has tor its object the distribution ot lubricating oil to one or more points of consuniption, such as pits in 'the service station, in such manner as to maintain absolute purity oil the oil up to the pointI of ini'iow into the engine crank case or other container or bearing; to maintain said oil at all tiines under proper conditions to i'low and lie handled easily, including the inaintenaiu-.c lo of an approxin'iately constant temperature; to keep the main supply ot oil, preferably in the original containers in an enclosure not accessilile to those who dran' upon it; and to record or meter the saine as it is drawn olf both in said inclosure and at the point ol consumption. AncillaryY objects are to provi de automatic means for handling measured bodies ol Oil at an intermediate point in the supply lines, and controlling the saine ironi the discharge noxzle "with incidental meterine.

n order to attain our objects We employ a supply house or Winehouse Which can be enclosed, and in which we maintain storage vessels containing oil or similar lubricant, special ineens being provided to apply the containers to a system ot piping which extends to the pits or points ot' consunilition, a gauge being provided lor each container, a` common gauge for the general supply sys-teni ol piping, and .finally a visible gauge lor the measuring cylinder through which the oil pascs from the pipe line to the discharge i. The suppbv and dis-charge to and from said meal-airing c vliiulcr are automatically controlled by electric cord-acts on the discharge noir/ile, which are opened and closed automatically by the operator in open ine; and closing the nozzle valve. Said supplv contacts in one position close a circuit which c the opening ot the pipe line to the measuring cylinder. and in the other iiofiiiion open said circuit, so as to revers, the valve connections. and close the pipe, and connect the measuring cylinder to the discha e nozzle, A iioat in the measuring cylind r, Working against other electrical contactsopcns said suppl)Y controlling circuit when the measuring cylinder is `full and in another 'torni may also close the same when the cylinder is emptied. thereby obviating the necessity for any contacts on the discharge nozzle.

Provision is made for drawing a full 26, 1925. Serial N0. 11,353.

stream, as when oil is to be supplied to a crank caso, or ay very small quantity, as when it is; to be used 'or lilnng oil cups and the like. These and other points Will su'tiiciently appear irom the detailed description hereinaiter.

ln the accompanying drawings forming a part ol this application,

l is a diagram ot a service plant einbodying the invention, with three pit-s equipped, oilice, storage and service capacity for nine drums ol oil or grease.

Fig. l is a longitudinal section on the line 3 3 oit Fig. l, showing two ol' the pits in transverse section, and beneath the runway with Vthe collecting pipe for the main receivin g tank.

F 2 is a transverse section on the line of Fig. l looking in the direction of the arrows. y

Fig. for th equipped.

llig. 3 is a longitlulinal .section on line 19-l9 ot' Fig. 3, ot one pit, showing heating and other pipes, and flooring arrangements.

l? -il is u diagram showing an arrangement oi piping, control valves, and sight ieed or indicator columns for oil Or grease drains, the piping i'rom the drums being taken through a reservoir and thence to the dispensing hose.

lfig. is a diagram with parts in section, showingan oil hose, nu-iasuring tank. con@ trolling valve therefor, electrical drive tor the controlling valve, and con'ibined nozzle and tank control l'or said drive. '.lhe iced pipo in this ligure is supposed to be connected to the discharge pipe from the reservoir in Fig. fl.

Figs. 5, 5", 5C and 5d show inodilied nozzle arrangements.

Fieis a sinipleniental ligure showing the measuring tank ot' Fig. 5 xquipped withitull automatic control.

Fig. 7 is a diagram showing' the connection between the parts of Fig. 4l and those of 5 and (3.

Fig. S is a diagrammatic ligure showing the application o't suction or YVacuum feed moans to the dispensing tank.

Referring to the drawings, and especially to liigs. l and 2, the general layout is 'for a plant having three or more pits, each adaptf is a diagram of the piping layout general system, with three pits il te ieeeive one Cei.

The eiis ente y the and eleftiieel li-eeutei'ss (liifewziy G, er directly 'lieiii the side ii ei'eix e space pei'iiiits, miel eiess the pits iii the iier t 'ii tioii ei' 'he aiiews p", leaving the pits y cheated b ai'iewu 2v2, und theiiee paesii @e by dri'vemiy G2. Each pit is e cli-iin pipe e t i eylincl ii'- ieiiial funnel 5 iideeteil tiieeth the drain Valve "l (l ai. Fei? gui'peses et aid'` b T5 preferably has e` sli/tie jeiiit- ,i

eeiiiieetieii ei svii'el Coup with t" tiuiil; (li'eiii pipe 27, which d siiitb able full the pit v ii tziiik 87 seid tziiil; being; il Se siiteieiit depth te satis ii J quiieiiieiiti' and :ilse te clieiiiege et the pipes.

iii the (lieiiiiigjs as located, gai* .fun n s O ai LLL- i'iii euiiflzitieii ei the building; i b it i if tice would be between the bui i. Vhe iifst pit, ei` beneath the Tramway? se Le te be ts loeetieii iii Fie'. l is accessible.

hiel; et smee eii the sheet i l 7 i'ied iif'ithout departing ii'oiii ti e f eiitl e 9e This tamil; is pievided with die Page ifeeepteele;

ii eheiiiel hiive eiies tmi'eigdg ti'olied by e., valve 10; air presi controlled by Valve l2; e. disch eoiitielled by Valve 7 and e 'vil y; tiiiiik pipe 7, eeiiti'elled by bei,V 3 all the S5 '.lhe pits P are ai'i'eiigecl parallel uct eitiieil` iiietiii ei' other, and ziie iippi'exi mately el f e duet mail the pits eziii be i s, size, lined with eoiiei'ete ei Ybi'ielz ifi' out with e heee. shown iii la, veel pievideal Wi tie tliziiiiege pipes U 1 i tie tim flanges 4i8 end Wheel tiaels 197 pi'e eeiistiiueti integral with the liiiiiig Walls. n

s te be hei ii wai' Wheels LHC pass over the tieeks 1S) outside tiet little Oi' iie iilcl eiv'ei shown in dotted liiies iii. l'. fltl'iiii Dit Je? it een :1re approximately teur deep9 mi ezifiiiy be ieiii ff ieil eii th e i them eentiifly iieiii eiifl to emi i the eifciiiimy '1 i, i, i 1 t ee 71am :im Qld1i- 1S 1., lfluu. fu@ U9 lil i limi; L it, chfiiii "T, the eil eiicl ti'iiiil; iiiiie the heating; pides ziie laid., as ii. duits tei* electric light Wires. this duet 2() is fiiehed ei'ei mi@ Covered, :wel iii the pits it hais Hoei.' bmii'tls ei other' suit# sits, pieiiei': bly ie plaint be lneeiiiin :ible cefe es indicated :it 20"" iii rei. i n

The pits P are hesite-,fi by meiiis ei het, Water izitliziteis indi :ated et 2li,

ply pipes toi` which are eziiiied theel' 1" i 20 te the heetei" ehetiiibeiq E? which l salte et siiiillilieity is iiet sliewii recessed te pei'iiiit elebut which extends dev-.iii eoiisideiiibly el' li eelielll-i. eiiilryiiiggtl i1 71, the level of the pits, se te have tell b i iet which the yeiise tl'ei'eiieiiifepuipeses et biiel iiewei'fl' niii-I ziie placed in pesi i' iieei @if lie ege iii the het Weiter of piping L the eliziiiibei extentie eutv l ois :it Neither ashes iioi1 eeel is iequiieti te be heiil; and the i'ziil exten piet- (lled, is heet is fiiiiisheii bj: the maisiiiiijpme terme Il iiiitieii eit the w, ste eyii idei' eiL collected i i the l' ei'i the pi; i ieiii tank 8, mid supplied thei'elieii'i te the hei tmtg se thett )L ti e i251 ing' plant iiiidei1 pressure iii e iiiiiiiiiei' piesii-.1237s 0ij the pits. i sir- L i anni The :ippeimif and methods cleeiitiy te be d eseiibed. The epi-uffi@ details W iistimtetl iii "l L iiieiit et 'the tli'iiiiis tl'- L G pieseiit iiiveiitioii, es an f iii fj 3 scribed are peculiarly applicable to what is known a SOUW, Whicl has heen, a slandard lubricant -for engineii paricnlarlpv steam engines 'for many yearn This lnhricanc is a thick and viscous eil, haring specifications-s uch as zo nahe it e-zirennl 2.y desirable for inolor vehicles; roept in one respect, that it is ahnosr black in color and is Very subject lo oozing and leakage. lly our present systern, niehode and apparatus, l'he use if 600V;v is rendered possible Without leakage or fouling of he planli, or Waele Rellen-ing;- now lo All? ij je 2230 ie enppofied ilo lead alone; henealh l1 ie plal'orni o oi` llig. 2, and lo a ref-ierror which may he loealed in an;v convenient place.. hnl nnisl he at a lower level fhan the drnnr; lf nl. The pipo Q50 hasy va. 910 and ll e hrancii 51- eS 2l() and 220 leadinff lo lhe rcs )ecrire 1 I w 20 drinne. Each of these dramal which are shown herein as standard ilfir hcl'h oil and greae, is or' rolled Sheet Sleel in cylindrical lornn Stiliened oy anni; es and pro- Tid d Willi connlersnnh hear only one of 271 which inade wird a." This is in order to lessen the cl sale of the drums hy and to nri i Y irizce. porcone, u remove oil or or oherwisc Qreasc 'from iche drums in iran :cept in an anhorirel pla.,

is filled with a union co il hy which a short Qc-.chien of ruhe can he grvned 'lo the pipe ..20 and herehy connect 'in lhc drain l.

`he Secion i-:i if; .ed info Jdie topped zi oyeningf in L ie drinn 'll ano provided with a falre 1&6. l is eeclgio'n of ipe ia reinferred, il o o; he drinn head if.; cloned hy means ol i secured lo has@ 4S the l'ho ph secured in plaire, enga? ireled oran-:i D? 'Wherelrv a )nello-ch or a lend Seal may he applied lo preren nnaull'ioried removal o" the plug; il?. l'liiis plug; ina;Y he Sealed in place hy olher 'ienne if deaired, the niain ohjecl: heinelo i., e the nianni'arlnrer o' :i3/renee reno shle lo the dealer who dierpeeeeeff il.,

i Donsihlo for d they inanrlaeinrer lo lhe eine' rihlen ne lo alain our ohjm oi roar Vlhe {lehrer}T lo Jrhe mndfaner op. iase creci ly afl.' it lcareii i'he hands of .hzclnren without conlaniinalion7 whizv ond nl J\l he ne heine; a graduated Y carrier-L in a l'ranie V2 and when in onen, indical'ing al1 all tin'ies che oil in drinn l. afi''ached lo its lill 'pipe 2:2. lfa should he ioel ihatthis pipe 22() alan ha. a. valve 53, and the pipe 210 ha@ a similar valve 5% the purpose or' which is lo prevent drainage of 'the eight tu: f; when rho e drome are being changed, as Well as to ent 'lil \ entire branch leadine' to an Y )articuinn r-:hen neel :Sary

i* ne ohserced .in lhe. 2 thatl the J1 )es l 'l L? 'ine orinnfs in oairs ece )t the last 1 'v L inree, which rorni a triplet. lVe have asennied lha# ir. the average plant two drains il rond will ,v .L can 4for each particu ar brand or cna i' oil grr so, and with Jche arrar shown in #L it would be` possi- ,f a singley drinn. since the reservoir hold enough oil or grease lo while lhe drinn l or l is being AChia ro-,erroir lv common to as:

.u i 7 -with e screen 54 'o keep ont foreign Suh- 'lfhis means.' that he system is v nl; aniohpheric pre re. As will prime appear, however, this may be Varied, elneeially willi reepcct to the grease or ihicl oil. while the light or Jrhinner lnhriailing' cih` inav he handled hv *rho arrange nien ol gf. li i Figi'. 5 is a. diagrammalic View of an anfoniagic zrrangrenien'c for supplyingoil. The :zink ',l is Shown containing the oil and ,er-adrailiom` on its side for denoting lzfhe (Ina "jy of oil lil'icrein. ltis connected hy he 'pipe t to the *alve V shown in Section. The salire plug o adapted to turn in the casing e o' that; rho pascage o2 may connect the lanl; rfilh either the nipple o leading to the hesv 'l' or *ghe nipple ci leading' to a Source which arc arranged in oppoeite i `|die easing, and hereinafter more 'hilfe desierihed. Il stein f/r" is fixed in J[he i so as ro extend downwardly and turn e naine. Near the 'con or rhe sioni a. Worin (fear fr fixed and adaililed lo mech n'il'h a .corni 'm5 on lhe #ha l'i m ol a Inolor lli so i'hal'y rho han' i; .rl liso Valve plan may he efl'erl'ed hy he lnrningg o5' lhe, niolor arnial'nre m eilher dire-cil)v or in ie-.=-r-e. A rererfrainn' ;\\:i'cl., is arranged iielov.' the faire and is shown pivoled al'y a and haring' anchor arms s and .r2 adapted to he fieled upon allernately hy a cam projection s" *which is; actuated and controlled hy the ramo cloni ci. The lfnoreinenl` o the motor and r l're is @oir lrolled hy incarna o? ihn relay which coin priSesi an elecl'roniae'net 'i' and armature con- 'aclc fr and 'r2 included in Seriee willi the contach; of lie re\'er;1in;.;' switch S and with a lor sn generator G p1l lying current to he nioi'or. The relay is energized from a hatlery vcrtica ly upwardly 'lroni lhe top olf the saine ril tion position. By this arrangement (as distinguished from that et the relay and a fortiori tue motor and valve are entirely controlled by the springs` Contact t" (eliminatine7 the nozzle control switch ./i but leaving; all the other iarts as shown in the position oi' the switch not bei j.; changed n n-- less the oil in the tanl; tails to its lowest level or ri .f to the highest (i. e. reniaininey as lett. whether iliade or broken, while the tloat is traveling rp or down the stein).

For measuring the number ot times the tanl is tilled a meter il] may be arranged in the circuit ufith the relay. This may be ot simple construction as shown in the drawing, consisting' ot' an electromagnet e, in parallel with the relay magnet r so as to be energized whenever the latter is energized, and havin;l an armature c controlled thereby and actingl on a stepping pawl o piyotally connected with the armature and adapted to engage with and inte' .ittently turn the ratchet wheel e3, which r be connected with an ordinary meter (not shown) 'tor reci'n'ding the number or movements.

7 is a diagrammatic illustration ot the connections and and the drums, reservoir and discharge apparatus just described. The drums and I arranged with their sight tubes7 individual cut-oli' valves etc., as described with re terence to Fig. lat are indicated by the dotted lines as being;- in store room B. 'om the drums. supply pipe L3 leads to the i Noir it which at a lower level and in the separate (equipment) room D. The reservoir is equipped with the sight tubes 56 and iter indicating the amount oit oil in the reseri'oir and in the entire system re nectively` and has the other connections betere described. From the bottom ot the reservoir the oil. line passes through the duct 2O (shrnrn in Fig. l) to the discharge apparatus indicated at Y and Y et the construction ust described with re'terence to itin. l5. which oil iced openings ot cars over the reach the Y pits (as indicated bj.' circles li. i. e! T1. i

y in si; i

\ 1i tte duct itl to the several pits and at the pipes are led throueli tlielmildingaiid thro desired. places in the systemD radiating;l units are arranged c` nnected to said pi it the seyeral pits the lubricant pipes are provided with lead-eti41 pipes, each adapted to supply ECS.

the individual pit with a particular lubricant. ,lt will be seen that the first three drums I, l', and l* are arranged the same as those ot' Figs. #l and 7 and are adapted to supply the same grade of oil. The reservoir is located as in Fig. it, and is indicated at R in the equipment chamber D, the lead-cti'l pipe carrying4 the oil from the same through the duct Qt). the supply tanks Y and hose arrangement are the same as that ot Fig. 5 and are iiulicated diagrammatically at the circles 'i`-'.l"-'l"`, with lines showhre` the pipe connections to the lead pipes in the duct just mentioned, and the valve members therefor. The drums indicated at I3 and l similarly connected to a common lead-off pipe, scparate from the former so that these :tormer may be used for a second grade ot oil. They may have a reservoir (not shown) similar to that of the lirst three drums, and are connected at the pits with separate supply tanks Vl". A third grade of oil may be supplied by the drimis similar to the drums I5 and I connected to the supply tanks T2; and in like manner any number of ditlerent grades of oil may be dispensed as desired. The two drums i with their connections are for grease and are arranged and controlled as shown in la with the several out ott' and control valves in the same places and with lead pipes passing,r through the equipment chamber and the duct (preferably separating' into two parallel pipes while passing througljh the duct) and connected with the discharge hoses 31-82- It will be noted that Figs. l and 3 supplement each other, Fing. l showingall the mechanical parts and Fig'. 3 all the piping and connections. The two can be superposed and read together. llle believe the arrangement shown in Fig. l and the organization of parts and connections shown in 3 to be new and original with us. and we shall claim the same accordingly. The following are the main iteaturcs ot' advantage in this general arrangement: minimum handling of supplies; direct access to storage chamber for delivery and removal of empty drums; ireproof storage and handling oit' materials throughout the plant; supplies maintained at uniform temperature in all seasons throughout the entire system; waste materials of the plant utilized in heating the plant without handling; plant perfectly elastic and expansibie unit by unit, by building and equipping new pits without ehanginc any other `features: maximum ei'liciency oi labor due to heatingl of pits and labor saving; devices; maximum etliciency in point oit time in operation duc t0 constant supply at point of application without any intern'icdiate steps or lost motion by employers or apparatus; `ignaranteed purity and character of product applied to parts, due to continuous supply from original containers under perfect conditions of temperature and pressure; centralized control and scribed are peculiarly applicable to what is known a SOUW, Whicl has been, a slandard lubricant -for eiigineii parlienlarlpv strain engines 'for many yearn This lnlnicanry is a thiol; and viscous cil, haring specifications-s uch as izo nahe it e-ziii-:ennl i.y desirable for inolor vehicles; roept in one respect, that it is ahnosr black in eolor and is Very subject lo oozing and leakage. lly our present systern, niehode and apparatus, l'he use if 600V;v is rendered possible Without leakage or fouling of he planli7 or Waele Rehm-ing;- now lo All? p pe 2230 ifi enppofied ilo lead along' henealh l1 ie plal'orni o oi` llig. 2, and lo a ref-ierror which. may he localed in an;v eonw'enienl. place.. hnl innsl he at a lower level rhan the drinn lf nl. The pipo Q50 hasy ra. 910 and ll e hranch piper; 2l() and 220 leading lo lho respective 20 "1 Each of these drninal which e rane. is or' rolled Sheet Sleel by( in cylindrical lornn Stiliened oy anni; 'CFS 3111i Pm' Tsided Willi connlersnnl; hear only one O 271 which inafle wird a." This is in order to lessen the cl sale of the drums hy and to nri i Y irizee. pcrions, i remove oil or or oherwisc Qrease 'from lhe drums in iran :cept in an anhorirel pla.,

is filled with a union eo il nl "t @urli-1v "-1 l-vx ii" I- li x `ii ,gior .conca o rane ,la can e go i pipe ..20 and 1Chereli i,

hr' which a red 'lo the y coni eet 'in lhe drain l.

zi opening in l ie drinn il ano iiirorided with a falre fill. l is eeclgior, of ipe ia reinferred, il o o; he drinn head if.; cloned hy means oli i secured lo hasip 4S the whizv ond nl e :920 ie provided with a lalieral arm a valve K and carrying the UU he ne heine; a graduated Y carrier-L in a l'ranie V2 and when in open, indical'ing al1 all tin'ies rho oil in drinn l. afi''ached lo ils lill 'pipe 2:2. lfa should he ioel lhatthis pipe 22() alan ha. a. valve 53, and the pipe 210 ha@ a similar valve 5% the purpose ol' which is lo prevent drainage of 'the eight tu: f; when rho e drome nre being changed, as Well as to ent 'lil l i 1e hands ol mined lli:-` rr: l .i 1 4:or each parlino ar brand or il volli.:

ena i' oil rrr so, and willi Jche arrar shown in -l it would be` possi- ,f a single drinn. since the reservoir hold enough oil or grease lo while lhe drinn l or l is being AChia ro-,erroir lv eonnnon to as:

a as. are con necled lo the saine leed i d ir; loivr erpiipped with a :iight l' i: i For the entire :'iysleni, and w .'rfghruhe indicator 56 for ileel lll will lio oln'orveil that lho upper endr, of' "he several columna 5l, 5l and 55 are open ai'. die r and each `fue if: covered with a fsereen 54 lo keep ont foreign Sub- 'lfhis means.' that rhe system is nl; alinoSplieric pre re. As will Y appear, however, this may be Varied, r-.flpeeially willi respect ro the grease or ihicl oil. while the light or Jrhinner lnhri- -alingr oil may he handled by *die arrange nien ol lligf. il.

Figi'. 5 is a. diagrammalic View of an anionialiic zrrangrenien'c for supplyingoil. The :ank T is Shown conl'ainingr the oil and ,er-adnelioi'ie` on its side for denoting lzfho (pia "jy of oil therein. ltis connected hy he pipe t lo the *alve V shown in Section. The salire plug o adapted to turn in the casing e si' that; rho paeSage o2 may connect'J lhe lanl; rfilh either the nipple o leading to the hee 'l' or *ghe nipple vof leading' to a Source which are arranged in oppoeite r `|die easing, and hereinafter more lnliv deficrihed. Il stein f/r" is fixed in J[he i so as lo extend downwardly and turn e naine. Near the top ol rhe eieni a. Worin wir r fixed and adaililed lo ineeh iril'h a .corni 'mi on lhe #ha l'i m ol a Inolor ill so i'hal'y lhe han' i; l l'ls'f Valve plan may he efl'erl'ed hl' he lnrniing o5' lhe inolor arnial'nre m eilher dire-cil)v or A rererfraingr .enrilclr is arranged lielor.' the faire and is shown pirolod ai'y a and haring' anchor arnis s and .r2 adapted to he arled ipon allernahly hy a cam projection s" *whirh is; actuatlli;

ed and controlled hy the rame sie? fri. The lfnoreinenl` oi. the motor and r l're is corr lrolled hy ineane oli ihn relay whieh coin priSes` an elecl'roinagrnet 'i' and armature con- 'acl'e 1" and 'r2 included in Serier, willi the contaclr; oi lhe re\'er;1in;.;' switch S and with a generator G lor supi lying current to he niol'or. r-l

l .ie relay is energized from a hatlery Ao in series` heroirirh.

'`he anl: 'll if* shown pai-ely hrohen away to :Show 'lile lont Z" having; a slicni if* YXtending verlica ly upwardly 'lroni lhe top oli the saine W11 lib a Some@ Supp@ pipe to a point et consumption, and a dispensing device at said point of consumption comprism?)` a measuring cylinder, a branch pipe therefrom to the run-oil" pipe, another branch pipe therefrom to a discharge nozzle, and valve means controlling said branch pipes. l2. A lubricating system and dispensing device for lubricating oil comprising the tolloiving instrumentalities: a source of' supply connected to a valved feed pipe, a reservoir, a run-oit pipe extending therefrom to a plurality oit dispensingdevices, each dispensino; device consisting o1 a measuring container, a discharge nozzle and supplj)7 connection to the run-oiin pipe, with a valve for the container adapted to connect said discharge and supply pipes to said container alternatively, and meansV tor metering the amount oi oil passing through each container. said source of supply and all intel mediate connections therefrom and thereto beine; inaccessible to an operator except on the discharge side of the dispensing' device.

13. In a lubricating system, a common enclosure, a source of oil supply therein, a coinmon conduit of minimum diameter fior both discharge and illing' pipes extending from said enclosure to one or more dispensingpoints, means Within said enclosure for metering the summative consumption of oil, and means at each dispensingl device for individually meterinp' its own consumption, said dis perusing device being' connected to said source of supph7 through said conduit, wherebyv both the proprietor o the. source oTp supply and the persoil or persons using the dispensing` devices, are protected against loss, said source ol supply and all intermediate connections therefrom and thereto being inaccessible to an operator except on the discharge side of the dispensing' device.

In testimony whereof We hereunto aix our signatures.

ANTHONY F. Gr. LUCAS. EDVARD E. CLEMENT. 

